SharePointServer_en-us.img file will be downloaded (image
file is ~ 2.2 GB of size)

Right
click IMG file and Mount the IMG file and then you can explore the files inside
img file.

First I double clicked Setup.exe and I
received an error popup that I have to install the pre requisites first.

First
step I double clicked Setup.exe and I
received an error popup that I have to install the pre requisites first.

Installing PreRequisites for SharePoint 2013

As part of SharePoint Server 2013 setup image files, we have prerequisiteinstaller.exe that need to click in order to start the installation of the pre requisites.

During prerequisites installations steps i was asked to reboot for the settings to take effect.After installation prerequisites installation auto started and some more installations happened. Finally the prerequisites installation completed.

Now click the Setup.exe file in your setup files list and the Sharepoint Server 2013 installation started.Enter the SharePoint 2013 product key received in email for continuing with installation process.Select Stand-Alone installation type and click Install Now button.

Now the installation continues for ~20-30 minutes. (depends on your hardware)

After the above power shell script execution was checking the DB changes and yes SharePoint Admin database and Configuration databases are created.

After the above steps continue again with launching the SharePoint Products Configuration Wizard.

Configuration continued from step-4 till the end and the configuration steps completed successfully.

SharePoint DBs are created by configuration wizard in the SQL Server 2008 R2 Express edition.

Launch Now Central Administration website to see if the SharePoint Products Configuration wizard is successful.Here comes the new look - SharePoint 2013 Central Administration home screen :)

New in SharePoint 2013 Central Admin screen left Nav - Apps feature that has integration with "SharePoint and Office Store" (need to explore what is it?) thinking we can now extend the SharePoint sites in farm level with third party apps from store.